进入mysql后，输入命令：show global variables like 'port';
具体如下:
~$ mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 5.7.20-0ubuntu0.16.04.1 (Ubuntu)
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
mysql> show global variables like 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3306 |
+---------------+-------+
1 row in set (0.02 sec)
---------------------
关于如何查看mysql版本：
方法一：
进入mysql cmd，
status;
将显示当前mysql的version的各种信息。
方法二：
还是在mysql的cmd下，输入：
select version();
查看MySQL端口号：
show global variables like 'port';
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如何查看mysql 默认端口号和修改端口号
1. 登录mysql
[root@test /]# mysql -u root -p
Enter password:
2. 使用命令show global variables like 'port';查看端口号
mysql> show global variables like 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3306 |
+---------------+-------+
1 row in set (0.00 sec)
3. 修改端口，编辑/etc/my.cnf文件。
[root@test etc]# vi my.cnf
[mysqld]
port=3506
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
"my.cnf" 11L, 261C written
[root@test etc]#
4. 重新启动mysql
[root@test ~]# /etc/init.d/mysqld restart 或 service mysql restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ]
5.再次登录后检查端口已修改为’3506’.
[root@test etc]# mysql -u root -p
Enter password:
mysql> show global variables like 'port';
+---------------+-------+
| Variable_name | Value |
+---------------+-------+
| port | 3506 |
+---------------+-------+
1 row in set (0.00 sec)
---------------------